Automatic Site Data - Harwell


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Within the table, each year is a link to a file containing one year of data for the pollutant at the head of the column. Data is presented as hourly averages for all pollutants. For sulphur dioxide, the highest 15min average recorded during the day is also included, for EPAQS exceedence calculations.

For detailed information about this site, see the Site Information Archive
Very fine particulate data is also gathered at this site,
as part of a separate project. 		Click Here


To view a data file, click on the link. To download a file hold down the Shift key, then click on the link.
For detailed information about this site, see the Site Information Archive



Harwell
Ozone
 Data available for 1976-77, 1983 - present
2002 2001 2000 1999 1998 1997 1996
1995 1994 1993 1992 1991 1990 1989
1988 1987 1986 1985 1984 1983
1977 1976
NOx and SO2
measured since 1995
Nitrogen dioxide Nitric oxide Oxides of nitrogen Sulphur dioxide Hourly Means Sulphur dioxide 15 Minute Means
2002 2002 2002 2002 2002
2001 2001 2001 2001 2001
2000 2000 2000 2000 2000
1999 1999 1999 1999 1999
1998 1998 1998 1998 1998
1997 1997 1997 1997 1997
1996 1996 1996 1996 1996
1995 1995 1995 1995 Not Available



The existing UK Hydrocarbon measurement network is coming to the end of is current operational phase.
The second EU air quality daughter directive, which sets limit values for benzene and carbon monoxide, requires the UK to increase significantly the number of monitoring points for measuring benzene. At the time that the additional monitoring points are installed, most of the existing monitoring points for benzene and 1,3-butadiene are to be replaced. The new monitors, which will need to comply with the reference method specified in the Directive for measuring benzene against the annual limit value, will not be able to provide information automatically updated on an hourly basis.
Until the new monitors are installed the number of hydrocarbon measurement sites will be reduced from 13 to 4, but this site will be remain operational

Harwell
Hydrocarbon Data
SpeciesYear
Benzene 2002 2001 2000 1999 1998 1997 1996 1995 1994
1,3-Butadiene 2002 2001 2000 1999 1998 1997 1996 1995 1994
iso-Butane 2002 2001 2000 1999 1998 1997 1996 1995 1994
n-Butane 2002 2001 2000 1999 1998 1997 1996 1995 1994
trans-2-Butane 2002 2001 2000 1999 1998 1997 1996 1995 1994
1-Butene 2002 2001 2000 1999 1998 1997 1996 1995 1994
cis-2-Butene 2001 2001 2000 1999 1998 1997 1996 1995 1994
Ethane 2002 2001 2000 1999 1998 1997 1996 1995 1994
Ethene 2002 2001 2000 1999 1998 1997 1996 1995 1994
Ethyl benzene 2002 2001 2000 1999 1998 1997 1996 1995 1994
Ethyne 2002 2001 2000 1999 1998 1997 1996 1995 1994
n-Heptane 2002 2001 2000 1999 1998 1997 1996 1995 1994
n-Hexane 2002 2001 2000 1999 1998 1997 1996 1995 1994
Isoprene 2002 2001 2000 1999 1998 1997 1996 1995 1994
Methyl pentane 2002 2001 2000 1999 1998 1997 1996 1995 1994
iso-Pentane 2002 2001 2000 1999 1998 1997 1996 1995 1994
n-Pentane 2002 2001 2000 1999 1998 1997 1996 1995 1994
cis-2-Pentene 2002 2001 2000 1999 1998 1997 1996 1995 1994
trans-2-Pentene 2002 2001 2000 1999 1998 1997 1996 1995 1994
Propane 2002 2001 2000 1999 1998 1997 1996 1995 1994
Propene 2002 2001 2000 1999 1998 1997 1996 1995 1994
Toluene 2002 2001 2000 1999 1998 1997 1996 1995 1994
m+p-Xylene 2002 2001 2000 1999 1998 1997 1996 1995 1994
o-Xylene 2002 2001 2000 1999 1998 1997 1996 1995 1994

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